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path: root/drivers/gpio/gpio-tps65218.c
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Diffstat (limited to 'drivers/gpio/gpio-tps65218.c')
-rw-r--r--drivers/gpio/gpio-tps65218.c45
1 files changed, 35 insertions, 10 deletions
diff --git a/drivers/gpio/gpio-tps65218.c b/drivers/gpio/gpio-tps65218.c
index 313c0e484..0eaeac8de 100644
--- a/drivers/gpio/gpio-tps65218.c
+++ b/drivers/gpio/gpio-tps65218.c
@@ -101,16 +101,6 @@ static int tps65218_gpio_request(struct gpio_chip *gc, unsigned offset)
break;
case 1:
- /* GP02 is push-pull by default, can be set as open drain. */
- if (gpiochip_line_is_open_drain(gc, offset)) {
- ret = tps65218_clear_bits(tps65218,
- TPS65218_REG_CONFIG1,
- TPS65218_CONFIG1_GPO2_BUF,
- TPS65218_PROTECT_L1);
- if (ret)
- return ret;
- }
-
/* Setup GPO2 */
ret = tps65218_clear_bits(tps65218, TPS65218_REG_CONFIG1,
TPS65218_CONFIG1_IO1_SEL,
@@ -148,6 +138,40 @@ static int tps65218_gpio_request(struct gpio_chip *gc, unsigned offset)
return 0;
}
+static int tps65218_gpio_set_single_ended(struct gpio_chip *gc,
+ unsigned offset,
+ enum single_ended_mode mode)
+{
+ struct tps65218_gpio *tps65218_gpio = gpiochip_get_data(gc);
+ struct tps65218 *tps65218 = tps65218_gpio->tps65218;
+
+ switch (offset) {
+ case 0:
+ case 2:
+ /* GPO1 is hardwired to be open drain */
+ if (mode == LINE_MODE_OPEN_DRAIN)
+ return 0;
+ return -ENOTSUPP;
+ case 1:
+ /* GPO2 is push-pull by default, can be set as open drain. */
+ if (mode == LINE_MODE_OPEN_DRAIN)
+ return tps65218_clear_bits(tps65218,
+ TPS65218_REG_CONFIG1,
+ TPS65218_CONFIG1_GPO2_BUF,
+ TPS65218_PROTECT_L1);
+ if (mode == LINE_MODE_PUSH_PULL)
+ return tps65218_set_bits(tps65218,
+ TPS65218_REG_CONFIG1,
+ TPS65218_CONFIG1_GPO2_BUF,
+ TPS65218_CONFIG1_GPO2_BUF,
+ TPS65218_PROTECT_L1);
+ return -ENOTSUPP;
+ default:
+ break;
+ }
+ return -ENOTSUPP;
+}
+
static struct gpio_chip template_chip = {
.label = "gpio-tps65218",
.owner = THIS_MODULE,
@@ -156,6 +180,7 @@ static struct gpio_chip template_chip = {
.direction_input = tps65218_gpio_input,
.get = tps65218_gpio_get,
.set = tps65218_gpio_set,
+ .set_single_ended = tps65218_gpio_set_single_ended,
.can_sleep = true,
.ngpio = 3,
.base = -1,